Sibu Jaya weather in September

In September, Sibu Jaya sees average daytime highs of 31°C and overnight lows near 23°C, with 234 mm of rain across 24.4 wet days and about 12 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 1% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Sibu Jaya's 6th-clearest and 8th-windiest month. For the whole year in context, see Sibu Jaya's year-round climate.

Daytime high
31°
6th warmest
Overnight low
23°
6th coldest
Rainfall
234 mm
24.4 wet days
Daylight
12 hours
6:26 AM – 6:27 PM
Cloud cover
85%
6th clearest
Wind
4 km/h
8th windiest
Solar energy
4.81 kWh/m²
Travel score
2.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Sibu Jaya reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123

How September really feels in Sibu Jaya

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Sibu Jaya weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°29927.511.92.8
Feb30° / 23°22923.411.92.9
Mar31° / 24°21825.9122.7
Apr31° / 24°22626.6122.5
May31° / 24°21125.612.12.7
Jun31° / 24°17021.112.13.1
Jul31° / 24°17220.712.13.2
Aug31° / 24°18521.512.13.0
Sep31° / 23°23424.4122.8
Oct31° / 23°26327.7122.6
Nov30° / 23°28828.511.92.5
Dec30° / 23°31728.711.92.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11288
21288
31288
41288
51288
61288
71288
81288
91288
101189
111090
121090
131090
14991
15991
16991
17991
18991
19991
20892
21892
22892
23892
24793
25793
26793
27694
28694
29694
30694

Chance of precipitation in September

Any precipitation

Sibu Jaya gets around 234 mm of rain over 24.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 81% and peaks near 85% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
179
280
380
480
580
681
781
881
981
1081
1180
1280
1380
1480
1580
1680
1781
1881
1981
2081
2182
2282
2382
2483
2583
2683
2784
2884
2985
3085

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the miserable band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
13961
23961
34060
44060
54060
64060
74060
84060
94060
104060
113961
123961
133862
143862
153763
163664
173565
183466
193367
203268
213268
223169
233169
243169
253268
263268
273268
283367
293466
303565

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over September. Sunrise moves from 6:31 AM to 6:22 AM, and sunset from 6:33 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:316:33
212.06:306:33
312.06:306:32
412.06:306:32
512.06:296:32
612.06:296:31
712.06:296:31
812.06:296:30
912.06:286:30
1012.06:286:29
1112.06:286:29
1212.06:276:29
1312.06:276:28
1412.06:276:28
1512.06:266:27
1612.06:266:27
1712.06:266:26
1812.06:256:26
1912.06:256:25
2012.06:256:25
2112.06:256:25
2212.06:246:24
2312.06:246:24
2412.06:246:23
2512.06:236:23
2612.06:236:23
2712.06:236:22
2812.06:226:22
2912.06:226:21
3012.06:226:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.81 kWh/m².

For context, solar energy here swings from a low near 3.87 kWh/m² to a high of 4.96 kWh/m² in August across the year — September's 4.81 kWh/m² sits near the top of that range.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Is September a good time to visit Sibu Jaya?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.8
Sightseeing
5th-best month of the year
4.1
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in Sibu Jaya.

What to pack for Sibu Jaya in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Sibu Jaya sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Sibu Jaya in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sibu Jaya peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 11 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 14UV 15Jul 14UV 11
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr15Extreme
May14Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct14Extreme
Nov11Extreme
Dec11Extreme

Air quality in Sibu Jaya in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Sibu Jaya is worst in September — around 26 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 11 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodSep 1325 µg/m³Dec 1411 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Moderate
Mar13Moderate
Apr14Moderate
May13Moderate
Jun14Moderate
Jul16Moderate
Aug22Moderate
Sep26Moderate
Oct17Moderate
Nov11Good
Dec11Good
Location & terrain

Where is Sibu Jaya?

Sibu Jaya sits at 2.2°N, 112.0°E, 68 m above sea level, in Malaysia. The nearest listed city is Sibu, 18 km away.

Topography around Sibu Jaya

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sibu Jaya.

Within 3 km, the terrain around Sibu Jaya has only modest variations in elevation — a maximum elevation change of 47 m around an average of 23 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 223 m; within 80 km, large variations in elevation — a maximum elevation change of 971 m.

The land around Sibu Jaya is covered by trees (75%) within 3 km, trees (90%) within 16 km, and trees (90%) within 80 km.

3 km
47 m
16 km
223 m
80 km
971 m
treesgrasslandartificial surfacesbare terrainwatermangroves
September weather nearby: Sibu 18 km · Kanowit 25 km · Julau 26 km · Maradong 43 km · Dalat 49 km · Selangau 50 km · Pakan 51 km · Sarikei 52 km

Malaysia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / G / M
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$13,125
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
95%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
22.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 581
Religion
Muslim 64%Buddhist 19%Christian 9%Hindu 6%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Sibu Jaya (2.2403°, 111.9714°, elevation 68 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).